Eaton PDI WaveStar, Руководство по установке и эксплуатации

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Eaton PDI WaveStar Color Monitor Setup and Operation Manual P-164001109—Rev 01 13
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Figure 10. Modbus Addressing
RPP
30
Downstream Modbus addresses must be assigned
sequentially from 1.
Downstream Modbus addresses are adjusted by
the Monitor’s upstream address.
BCMS BCMS
PB1 PB2 PB3 PB4
30 31 32 33 34
1 2 3 4
Monitor’s Upstream Modbus Segment Monitor’s Downstream Modbus Segment
To upstream
Modbus
client (BMS,
DCIM, etc.)
30 = Monitor’s assigned upstream address.
These addresses are visible from
the upstream Modbus client:
Refer to Figure 10 , “Modbus Addressing,” with the following bullet points:
• The Monitor is a Modbus client to its downstream devices. The upstream Modbus client cannot directly
address these devices, but rather addresses them through the Monitor. Upstream and downstream are
separate Modbus segments.
• The Monitor’s upstream address can be set to from 1 to 255, but you must leave enough addressing
capacity for downstream devices. The monitor will not respond to a command sent to address 0. The
address is set in Monitor Setup. See paragraph
4.2.3 TCP/IP and Modbus TCP/IP Setup .
• The Monitor’s downstream devices must be assigned consecutive addresses starting at address 1.
• For upstream addressing these device addresses are remapped as successor addresses to the Monitor. If
the Monitor has upstream address 30, the downstream addresses 1, 2, 3, 4 are remapped to 31, 32, 33, 34
as seen from the BMS or other Modbus client.
• Modbus addressing is the same for Modbus RTU and Modbus TCP/IP.
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Upstream Modbus on the Color Monitor supports three (3) Modbus commands only (with typical flag and data
values shown in hexadecimal) for communicating with the points lists of the Monitor or devices in its chain:
1. Read Server ID (command 11)
Color Monitor Networking